Why did he bail out on me?

A few weeks ago my friends met a cute guy and gave him my number. we have been texting daily and trying to hangout in person. he's already told me he wants to kiss me and he has even invited me over to his house, unfortunately I had other plans but last night I offered to give him a ride to a friends house where a few of us were hanging out and drinking. he couldn't make up his mind if he wanted to go or not and he finally said "No, sorry. but I do want to meet you, maybe we could plan a date some time."

we had been planning to hangout all day, he even drove in to my town so we could meet up at my friends... why would he bail and ask to go on a date?